Sodium In Comets

@article{Cremonese1997SodiumIC,
  title={Sodium In Comets},
  author={Gabriele Cremonese and Marco Fulle},
  journal={Earth, Moon, and Planets},
  year={1997},
  volume={79},
  pages={209-220}
}
A great deal of attention has been given to the production and spatial distribution of sodium in comets after the discovery of the sodium tail, by Cremonese et al. (1997a), on Hale-Bopp. The sodium has been observed in several comets in the past, but the Hale-Bopp represent the first time where it will be deeply analyzed considering the several data and scientists working on that. The sodium tail stimulated different studies trying to explain the mechanism source and provided the new lifetime… 

Hale-Bopp and Its Sodium Tails

The sodium emissions have been observed in several new and long-period comets, but only for comet Mrkos 1957d (Nguyen-Huu-Doan, 1960) was a sodium tail detected on a Schmidt plate obtained with a

Investigating the neutral sodium emissions observed at comets

Neutral sodium emission is typically very easy to detect in comets, and has been seen to form a distinct neutral sodium tail at some comets. If the source of neutral cometary sodium could be

Comet McNaught C/2006 P1: observation of the sodium emission by the solar telescope THEMIS

Comet McNaught C/2006 P1 was the brightest comet of the last forty years when reaching its perihelion at an heliocentric distance of 0.17 AU. Two days before this perihelion, at an heliocentric

Heliocentric Dependence of Sodium Emission of Comet Hale-Bopp (C/1995O1)

A sequential spectroscopic observation of comet C/1995 O1 (Hale-Bopp) was performed from 1996 September to 1997 May. After the first positive detection in early 1997 February, the development of the

Basic Atmospheric Chemistry: A Quantum Chemical Study on Hydration of Mesospheric NaOH

Environmental Context.A natural global layer of sodium atoms exists in the mesosphere, 80–95 km above sea level, where it originates—along with lithium, iron, and calcium—from ablation of meteors.

Polarization from Aligned Atoms as a Diagnostic of Circumstellar, Active Galactic Nuclei, and Interstellar Magnetic Fields. II. Atoms with Hyperfine Structure

We show that atomic alignment presents a reliable way to study the topology of astrophysical magnetic fields. The effect of atomic alignment arises from modulation of the relative population of the

Chemical abundances determined from meteor spectra: II. Evidence for enlarged sodium abundances in meteoroids

The relative abundances of sodium in meteoroids have been estimated by averaging the composition of the radiating gas along the fireball path produced during their atmospheric entry. We used the

References

SHOWING 1-10 OF 13 REFERENCES

Neutral Sodium from Comet Hale-Bopp: A Third Type of Tail

We report on the discovery and analysis of a striking neutral sodium gas tail associated with comet C/1995 O1 Hale-Bopp. Sodium D line emission has been observed at heliocentric distance r≤1.4 AU in

Three tails of comet Hale‐Bopp

We report on the imaging detection of the sodium tail of comet Hale‐Bopp using large field‐of‐view, multi‐wavelength observations from the McDonald Observatory in March 1997. We subtract off‐band

SODIUM VELOCITIES AND SOURCES IN HALE-BOPP

We use spatially resolved high-resolution spectra of the 5890 and 5896 A sodium D lines in the nuclear regions of Comet Hale–Bopp to determine the sources of cometary sodium. Comparison of the data

The Morphological Change of the Sodium Tail in Comet Hale-Bopp (C/1995 O1)

The narrow sodium tail was observed in comet Hale-Bopp in the middle of 1997 April and the beginning of 1997 May. However, it was not observed in the middle of 1997 March. Wilson and coworkers

The spatial distribution of gaseous atomic sodium in the comae of comets: Evidence for direct nucleus and extended plasma sources

Abstract Sodium D-line emission (5890 and 5896 A) has been observed in bright comets at small to moderate heliocentric distances for many years. We present here the first in depth study of a set of

The spatial sodium distribution in the coma of comet Hale-Bopp (C/1995 O1)

Long-slit spectra of sodium D-line emission in the coma of comet Hale-Bopp (C/1995 O1) have been obtained on 14 March and 16 April 1997 from the Observatoire de Haute- Provence, France, and the

Sodium near the Tail of Comet Giacobini–Zinner

Abstract In September 1985, the International Cometary Explorer (ICE) Spacecraft passed through the plasma tail of Comet Giacobini–Zinner at a distance of 7800 km downstream from the nucleus. The

Sodium D-line emission in Comet West (1975n) and the sodium source in Comets

A spectrum of the sodium D-line emission from Comet West (1975n) taken at heliocentric distance 1.4 AU is analyzed by comparing the D-line brightness to that in the underlying continuum. Using the

Long-term Evolution of the Outgassing of Comet Hale-Bopp From Radio Observations

C/1995 O1 (Hale-Bopp) has been observed on a regular basis since August 1995 at millimetre and submillimetre wavelengths using IRAM, JCMT, CSO and SEST radio telescopes. The production rates of eight